Windowing

Windowing/AppWindow.cs

A deliberately thin GLFW wrapper — not OpenTK's GameWindow — so init hints, platform selection, and the frame loop are all explicit and GLava-shaped rather than inherited from a general-purpose game-engine loop. PlatformPreference.Any lets GLFW pick Wayland when running inside a Wayland session and fall back to X11 otherwise, which is what actually gives GlavaSharp both-compositor support — GLava's mainline branch talks to Xlib directly and is X11-only (its unstable branch has experimented with GLFW too, for the same reason).